How to control mic volume output?

How to control mic volume output?

Hi All,

Sorry if this is a dumb question, but is there a fast and quick way to increase/decrease my mic output?

For example, on my guitar, I'll just turn up the gain knob. But on the VL3, is there any quick way to increase or decrease the gain on my mic input?
Can I program a footswitch to be up or down on the mic gain?